Can anyone tell me what an architectural bidirectional relationship is with regards to urban anthropology?

No, but you may find some ideas/answers in some of the articles here:

http://www.google.com/search?hl=en&site=&q=architectural+bidirectional+relationship&btnK=Google+Search&oq=&aq=&aqi=&aql=&gs_sm=&gs_upl=&gs_l=